Tubular lock



F. K. HEYER TUBULAR LOCK March 16, 1954 4 Sheets-Sheet 1 Filed Dec. 11,1948 n m. 6 Mm IT m 5 on mm M 3 G v? v0. mm 5 w QM vi 3 Mm ow w m mm wmm (7 LO Q INVENTOR Ffk. Hyr BY ATTORNEY March 16, 1954 HEYER 2,672,041

TUBULAR LOCK Filed Dec. 11, 1948 '4 Sheets-Sheet 2 i .l'l. 1 11:14.

55 6 56 e6 66 7 69 58a 59 'l 60 W 5 I6 I I INVENTOR ATTORNEY March 16,1954 F. K. HEYER 2,672,041

' TUBULAR LOCK Filed Dec. 11, 1948 4 Sheets-Sheet 3 I AITTORNEY March16, 1954' HEYER I 2,572,041

I TUBULAR LOCK Patented Mar. 16, 1954 Thai! 1:

n st il: lie-z n ma a yoga, s or t Monolo hz e's io hpplicationpeceniber 11, 194 3 Serial No. 64,735

t ny

This invention relates to a tubular look, and more particularly, to thetubular lock d s ribed and claimed in my a plication for patent, SerialNo. 698,936 filed September 24, 1946, which issued as Patent No.2,538,688 on January -.1,6,.=1951.

In the said application -I show a rollback casin adapted. to bepositioned in a transverse-bolt? formed in a door and to be united withalatch: bolt casing inserted in a bore beginning at the edge of the doorand running toward the bore into which the rollback casing is secured.The roll-.- bael; casing shown in application houses a rollback adaptedto be actuated by'a spindle that in turn is rotated by' a pair ofspindle operators, there being one spindle operator at each end .of therollbacl; casing. Each spindle operator is adapted to be maintained in acentral neutral position by a pair of control andis rotatable clockwiseor counter-clockwise from the said neutral position by a knob securedthereto.

In my earlier application, I-show a singlesolid I spindle positioned inthe rollback casing and aperated by the two spindle operators so thatthe inside knob and the outside -k-nob arexotatable together at alltimes. Thus, iiiy .easlierizlock nan be characterized as comprising'a--rollbackcasing having a pair of centrally positioned .spindlepperatorscapable of rotation independently of one another by knobs with the twospindle operators being joined for operation together when .a single 1solid spindle assembled relatively thereto.

V -In my present application, Iuti-liz'e substantially the samerollback; casingas in my' earlier application and the very-samearrangement of spindle operators and spindle operator centering means.However, use an entirjeli differentvspin- 'dle construction so that thelmofps are iota-table relatively to one another. Similarly, -I providemeans for locking the outside spindle operator and its knob againstrotation, means being pmvided to allow rotation of the' outsidespindleloperator upon suitable 'actuation' -oi keyioperated mechanism.-The control means foix effiectingkthe locking of the outside spindleoperator and. the outside knob are mounted :in ithecinsidedenobiand arereadily controlled 'as will .be :indicatedipresrently.

' In otherwor-ds l utilize substantiallythe same casing, rollback, andspindle -operator,construetion as in my earlier loch, -butlby providingitwo spindles instead of one, together with difierent knobs, -I obtainentirely different iiontrlolsafid entirely difier-ent operations;ZEherebyfl mama possible to utilize thebasic-combinationof my earlierapplication own d 191 store oorsfo tsi o apar m house doors, a d for eriholo lolio fi a W od i app eciat d by th se sk led hi the art;

a urth r featu e ov 'pmy in n n 1 ut a split spindle .oomnrised o tw Pa.0119 fiollfi outs de and one called inside, both spindleportsh n rm l oit ned wi he io lhe l contained in the rollba k easin t will n m ilyappreciated that he i is do P t of th pli spindle is mo e outward o theif t it will no lon r be efie i o to a e th o l k? For so positi n n thespin le I ,t' zo'1mo mounted Within t is ollback Pos n a d actuated byan extremely novel const u t on of th in de knob. i

As a particular feature o the in en i n that is of considerableimportance, th outsid spindle is pushed i wha m y b cons der the lookedp i i h eof through th vh ol im o yi ldin means. l 'l'hereafitor, thelltdid SPi l l? may p? moved a t u h compres i n o the y eldi,rheansit'o render the outside spindle e fiective, but.without'disturbing the means that were first used to move the outsidespindle into its locking .posi; noni :Because of this onstructi n. on ethe out: side vspindle is .placed in locked position by the operation ofthe means in the inside knob, it can be inaved into and out of lockedposition through other means without disturbing the setting ofthe means:in the inside knob. Those skilled in the lock artwill readilyappreciate the extreme desir; abiliti of this functioning of myinvention. As "a furthermore particular feature of them vention, thel'outside spindle when moved out of the rollbackisladaptedtoibe'lockedagainst rota; tion so that a doubleilockingthereof is eiiected. -In7other 1'vords, .the outside .spindle'is notonly not in engagement withthe rollback but is also held againstrotation.

1n the ftubular locks of the prior art, there is =frequentlyoproizidedaipushobutton on the inside knob for locking .the outside knob, and innany locks lthe' push Tbuttori is depressed ,to lock .the outside=knoba'nd .then remains .olepresseol until the insideiknob =isrotated or(the latch-bolt is re tracted, ithese operations releasing the button.;for

lou'tward inovement. Where the look is applied to Ian .outside .door, itis generally :Ili fififihhifij? move-.th'e .push button into lockedposition and then maintain -it there until the push button is actuallymamially released rather than aut ma ically released by the .olos hg ofthe door or the turning of the inside knob. vFor this purpose therearepmvided means wher b th .plfihi liil' spring and then rotated intolocked position. Thereafter, to release the push button, it is rotatedfirst in a reverse direction and then allowed to spring outwardly. Suchoperation of the push button is extremely difficult, especially forwomen and children. In another type of lock of this class, locking iseffected by a turn button carried by the inside knob. This type ofbutton is also difficult to manipulate.

I have conceived a construction using a push button that may effectlocking without turning thereof. Thus, my push button, when pushedinwardly, effects a locking of the mechanism, the push button thenmoving outwardly again to a predetermined position, while leaving themechanism locked. Upon a second inward pushing of the push button, itreleases the locking mechanism and moves outwardly once again. In otherwords, my invention comprises the locking first by a first push on thepush button and the release thereafter of the locking mechanism by asecond push on the push button.

I have thus outlined rather broadly the more important features of myinvention in order that the detailed description thereof that followsmay be better understood, and in order that my contribution to the artmay be better appreciated. There are, of course, additional features ofmy invention that will be described hereinafter and which will form thesubject of the claims appended hereto. Those skilled in the art willappreciate that the conception on which my disclosure is based mayreadily be utilized as a basis for the designing of other structures forcarrying out the several purposes of my invention. It is important,therefore, that the claims be regarded as including such equivalentconstructions as do not depart from the spirit and scope of myinvention, in order to prevent the appropriation of my invention bythose skilled in the art.

Referring now to the drawings, Fig. 1 is a vertical section through therollback casing of my lock and the inside and outside operating knobs.Fig. 2 is a section taken along the same lines as Fig. 1, but showingthe outside spindle and outside knob locked against rotation. Fig. 3shows the parts carried by the inside knob in a different operatingposition. Fig. 4 is a view taken along lines 4-4 of Fig. 2. Fig. 5 is asection taken along lines 5-5 of Fig. 2. Fig. 6 is a section taken alonglines 66 of Fig. 2. Fig. '7 is an exploded view of the parts of theinside knob push button and the mechanism actuated thereby. Fig. 8 showsan inside knob equipped with a key operated mechanism for locking andreleasing the outside spindle. Fig. 9 shows two of the important partsutilized in the combination of Fig. 8. Fig. 10 is a perspective view ofthe outside spindle. Fig. 11 is an elevation of the inside knob whileFig. 12 is an elevation of the outside knob. Fig. 13 is a partialvertical section showing the latchbolt casing and its relation to therollback casing. Fig. 14 shows the latchbolt casing assembled to therollback casing with the two knobs and their roses in operatingposition.

Referring now more particularly to the drawings, and especially Figs. 11to 14 inclusive, the latchbolt casing of my invention is designated byreference numeral [0 and has mounted therein a latchbolt ll adapted tobe retracted by a push piece [2 shown more particularly in Fig. 13. Thispush piece I2 is mounted for movement to the left in Fig. 3 uponrotation clockwise or counter-clockwise of the rollback l3 mountedwithin the rollback casing indicated generally. by refer- 4 ence numeralI4. It will be noted that the rollback casing has threaded sleeveportions I5 on which are adapted for rotation parts for supporting theroses [6. The inside knob of my lock is designated by reference numerall1 and is adapted to have mounted therein a push button [8, the outsideknob being designated by reference numeral l9 and carrying a cylinderlock best shown in Fig. 1 within which is mounted a key plug 22 bestshown in Fig. 12.

The rollback casing I4 is formed of two halves, as is quite apparentthrough reference to Figs. 1, 2, and 14. Essentially, the rollbackcasing is exactly the same as that of my earlier application supraexcept that the two parts comprise a series of nesting lugs 23, eachhaving an upstanding shoulder 24. By passing a wire 25 between theupstanding shoulders 24 of the lugs 23, the two casing halves are lockedtogether and are prevented from separation. I have found thisconstruction superior to that of my earlier casing construction whereinI use a series of matching lugs adapted to be locked together by aspring sleeve.

The latchbolt casing 10 has a pair of arms 26 adapted to enter therollback casing M and to be locked thereto by means fully claimed andset forth in my earlier application supra. It is between these two arms26 that the push piece l2 is positioned for actuation by the rollbackit, also as set forth in my earlier application. To understand thepresent invention it is only necessary to know that I use a rollback toretract a latchbolt, my invention residing here in the control of thespindles that rotate the rollback.

The outside spindle operator of my invention is designated by referencenumeral 21 as best seen in Figs. 1 and 2, and is mounted for freerotation relatively to the rollback casing l4. Part of the spindleoperator 2'! lies within one of the sleeve portions of the rollbackcasing M, while part thereof is within a central rollback chamber of therollback casing, a suitable retainer ring 28 being utilized forretaining the spindle operator 2'! against movement outwardly of therollback casing.

The inner spindle operator is designated by reference numeral 29 and ismounted within the rollback casing M in substantially the same manner asis the spindle operator 21. A pair of control rings 30, best shown inFigs. 1 and 2, coact with a spring 3! and a longitudinal rib 32 of therollback casing I4 to maintain the spindle operator 21 in apredetermined rotated neutral position relatively to the rollback casingl4. Thus, the control rings function through the spring 3% to return thespindle operator 2? to the position illustrated in Fig. 1 whenever thespindle operator is rotated clockwise or 1 counter-clockwise. Similarly,a pair of control rings 33 function to maintain the outer spindleoperator 29 in a neutral rotated position relatively to the rollbackcasing M. The construction of the control rings and their manner offunctioning is well set forth and claimed in my earlier applicationsupra and is therefore not described in more detail here.

The rollback i3 is formed with a square bore 3 3 in which is adapted tobe mounted the inner spindle and the outer spindle 36, the spindlesbeing square and therefore slidable relatively to the bore 34 in therollback H3. The spindles are similarly slidable in square bores of thetwo spindle operators. The end of the inner spindle 35 is turned downslightly at 31 as probably best seen in Fig. 7, to cut down the cornersthereof and is formed with a pin "portion 38 lying within a bore-x39ofthe spindle 35.

A slot All is termed on the upper sur'iaee of the inner spindleiias'bestseen in Figs. 1 and 7, and cooperating with this slot 40 is the lug 4|of a slide .42. Slide 42 is formed with a groove 43 within which lies aspring 44, the right hand end of which as seen in Fig. bears against asurface of inner spindle operator 29, whereby to urge the slide 42toward the'left in Fig. :1. The slide is retained against movementcompletely outwardly of the spindle'operator .29 through a scalp 45applied to the endof the spindle operator 29 and having an inwardlyextendingshoulder coasting with the curved end 46 of theslide 42. Innerspindle 35 is formed also with a bore 41 within which is positioned acompression spring 45, the left end of which presses against an arm 49depending downwardly from slide 42 and equipped with a spring guidingpin v4.9a. It is the function of spring 48 to maintain the inner spindle35 in its position of .Fig. .1 relatively to slide .2. It is the furtherfunction of the spring 48 to act as an intermediary between slide 42 andthe spindle 35 whereby movement of the slide 42 to the right'in Fig. lwillmove the spindle 35 to the right in Fig. l and to the position ofFig. 2. The spring 48 has a further function whereby to allow movementof the spindle 35 to the left from its position of Fig. 2 without movingslide 42, all as will be set forth hereinafter.

The inner spindle operator 29 carries a spring operated retainingplunger Sfinormally positioned in alignment with a bore of the leftsleeve portion of the'rollback casing has seen in Figs. 1 and 2. Theretaining plunger 50 .is adapted to enter a retaining bore 152 in a part53 of the inner knoh it whereby when the knob is slipped over thespindle operator itwill be retained against outward movement asvfully'shown in the drawings. Naturally, by the mere insertion of a toolinto the bore til, the retainin plunger 5.0 may be depressed and theknob "removed.

Knob I? is fashioned ofsheet, metal asis fully shown in the drawings andis adapted to-have secured thereto a cup 54. of sheet metal. bestshownin Figs. 3 and 4. The knob I! is furthermore formed so as to have-acentral opening 551 within which operates the push button [8 earlierreferred to and probably best illustrated in Figs. 3 and 4 takentogetherwith Fig. '7.

Push button I8 is formed oisheet metal adapted to be forced over the endof a peculiarly shaped plunger 55 best seen in Fig. '1. Plunger 56 isformed with a central longitudinal slot 5'! with.r in which moves anodd-shaped detent 53 best illustrated in Figsl and3 and resembling best1 an inverted U. One leg of the detent'fifl is designated by referencenumeral 5.9,. and it moves relatively to a spring containing bore 63 ofthe plunger 56. A spring 6| lies within this bore 69 of the plunger 55and acts to press the detent 56 into its position of Figs. 1 and 2. ASpring 62 is positioned between the bottom of the cupshaped member. 54and a surface ofthe plunger 56 whereby normally'to urge the plunger 56and the push button it into the position of Figs. '1 and 2. Slidablymounted about the plunger 55 is a sleeve-like push piece 63. best shownin. Fig. I. At the right hand end of the push piece title a pin .E-adapted for (reaction-with the arm 49 of the slide .2 as is fully shownin the drawings. Push piece 63 is formed with a longitudinal slot esadapted for alignment with the slot 510i the plunger L5G. lltalsdformedwith-a transverse slot .65 .adaptedforcoaction with a dog 51 pivflotally mounted at 58 within the .cup .54 and urged by a spring 69'tewardrthe slot 66. "Push piece 53 is formed with :an'opening 10adapted to expose a slot 1] in the plunger 56. Qperating within theopening 10 and within the slot 'll is part of a dog :12 pivoted at 13 tothe cupid and urged by a spring 14 toward the slot :1 I.

When the parts are positioned as Fig. 1, the spring 52 holds the plunger.56 and the push but= ton [B in the position of .Fig. l, the outwardmovement of the plunger 56 being limited through coaction of the dog I2with the shoulder Hat defining the right hand end of. the slot 11 inlunger 56. .At the same time, the dog 51 will pressagainst the uppersurface of the'push piece $3 to the right of the slot '56 thereof. Pines of thepush piecewill be against the depending arm 49 of the slide.42. Detent 58 will lie assess in Fig. .1, being held by itss ring 59ain the-particular position illustrated.

Let us now see what happens when the push button 18 ispressed inwardlyor to the right in Fig. 1. As the push button lemoves to theright. itcarries with it the detent58 and the push piece es, all moving againstthe force of the sprin 62 and spring .44.. Naturally. movement to the riht will cause the pin end .64 of the push pie-2e 63 to move the slide 42into the position of Fig. 2. thereby acting through the spring 48 to-efe movement to the right of the inner spindle .35 and the outer spindle36. During this. movement the cam surface, 53a of thedetent 58 willmerely act to press the dog 61 upwardly against the or f ts sprit9,-.after wh eh the det nt 8 will be positioned to the right of the.dog 51. As soon as the slot .66 of the push piece 5.3 moves oppositeand under the dog .61, that do will ride into the slot 65 as shownin Fis. 2. 3 and r and the push piece 63 willthereafter be locked in hposition of Fig. 1. However, push bu ton it and the plunger 5.6 doreturn to the position of Figs- 1 and 2, and to explain this movement'anintermediate position of the pushbutton t8 and the plunger 56 isillustrated in. Fig. 3.

During movement of the push button If! and plunger .56 to the leftfrom-a position in whi h the right end of detcnt 58 is at h 'l'ight 0t(10% er, the surface 582) of the'detent. 58 Will ride against the dog5'! and will be held by the, dog 8-! against further movement to theleft with the plunger 55. This will allow the downwa dly tapered endsuriaee. l5 ofthe plun er 56 o move with the push button 18. away from ts 5 and outfrom. under thebottomei the i ht hand le of the detent 58.This is pos l because spring as is morenoweriul than springfil. At thispointthe detent-dij willmove. downwardly to the position of'Fig. 3through the compression of spr n 'tl. with do .5 ammine the deten w wa dy to allow .detent- 8 o move t the. left of dog filand back its normalrelation to th 'plunser 56 and the p sh butt n leillustrat d in 1 and 2.In other words, a the p sh button 13 moves to the left of Fig. '3totheposi tion of Fig.2, it leaves hepush p ec beh nd ts urelyilockedby thede 6 d tent 58 bein first cammed below the dog 5'! and then pushedoutwardl by nsu in 6i i to its o mal posihas relat vely t the pus'button t.

In the position the. parts havenew r ach d. the slide 4 and thpushpieee- 3am eld by he do 61 so as o maintain the spindles and 36 inthe position illustrated in Fig. 2. Let-us asume-itnew-becomes.desirabletoellowmovement of the spindle 35 to the left fromits position of Fig. 2 and back to its position of Fig. 1. This movementwill be imparted to the spindle by the influence of means acting againstthe outer spindle 3S, and also by the spring 44 operating between slide42 and inner spindle operator 29. However, such movement of the spindlescannot be accomplished until push piece 63 is released from the dog 61.Such release is effected by a second inward movement of push button [8,this inward movement being considerably less, however, than was requiredto move the parts originally into the position of Fig. 2.

Thus, if push button I3 is moved to the right in Fig. 2, surface 58a ofthe detent 58, being held against downward movement as in Fig. 3 by asolid surface of the plunger 56, acts solidly against the dog and movesit firmly against the force of its spring 69 so as to withdraw it fromthe slot 68. Immediately thereafter, the push piece 63 is moved to theleft and back to its position of Fig. l relatively to push button l8. Inorder words, the same push button that effects a movement to the rightof the spindles when first depressed, releases the spindle holdingmechanism and allows a movement thereof to the left upon a second andsequential depression thereof. The extreme value of this part of myconstruction will be appreciated at once by those skilled in the art.

During all this movement of the several parts just described, dog 12acts as a limiting member relatively to the push piece {i3 and theplunger 56. The outerspindle 36 may be formed of a single piece as bestillustrated in Fig. 10. Thus, it will have at its right end acylindrical portion 18 having a cam surface projecting therefrom anddesignated by reference numeral 79. Upstanding from this cylindricalportion I3 is a guiding and locking member 80 formed with a slot 8iadapted for coaction with a rib 32 formed as an integral part of theright hand sleeve portion of the rollback casing 14. On the other hand,the outer spindle 36 may be formed of square stock for ready assembly,as best illustrated in Figs. 1 and 2, to a cylindrical member 18a,having a cam portion 79a. and a guiding and locking member 38a formedwith a slot 8Ia. Actually, whether or not the parts are constructed asin Figs. 1 and 2 or as in Fig. 10 is immaterial to the operation of theinvention.

When the outer spindle 36 is in its position of Fig. l, the left endthereof is within the bore 34 of the rollback so that rotation of thespindle by the outside spindle operator 21 will effect rotation of therollback. Moreover, the slot8 la of the guiding and locking member 80ais to the left of the rib 82 so that the spindle 38 is free to berotated by the spindle operator 2? within which it slides. However, whenthe spindle 36 is moved to the position of Fig. 2 through actuation ofthe push button [8 as earlier described, the slot Bla of the guiding andlocking member 85a will ride over the rib 82, thereby locking the outerspindle 33 against rotation. Outside spindle 36 is, in the position ofthe parts in Fig. 2, outside of the bore 33 of the rollback so as not toprevent the rotation of the rollback by and with the inner spindle 35.At this point, it will be well to indicate that through the cutting awayof the inner spindle 35 at 37, a safety zone is created so that theinner spindle in the position of the parts in Fig. 2 may be free torotate even though a part thereof is within the square bore of the nowlocked spindle operator 21.

The outer spindleoperator -21 has pinned thereto at 83 an outer knob l9formed of sheet metal 84 shaped to contain therein a cylinder 20equipped with the usual key plug 22 having an operating bar 85. It isthe function of the bar 35 to rotate a cam 86 equipped with a camsurface 8'! adapted for coaction with the cam surface 19a at the end ofthe cylindrical portion 18a that rotates with outer spindle 36. A spring88 bears at its left end within a shallow bore 89 in cylindrical portion18, or a bore 89a in the cylindrical part 18a of the modification ofFig. l or 2. In either case spring 88 urges the spindle 36 to the leftin the position of the parts in Figs. 1 and 2, the right hand end of thespring 88 bearing against a surface of the cam 86 and being guided by asuitable guide pin 90 formed integrally with the cam 86. It is thefunction of the spring 88 to maintain the outer spindle 36 firmlyagainst the inner spindle 35, whereby the outer spindle 35 will followthe inner spindle 35 to its extreme left position shown in Fig. 1 whileresisting the movement of the two spindles to the right into theposition of Fig. 2.

Let us say now that the spindle 36 has been moved into the position ofFig. 2 wherein it is locked against rotation and locks also the spindleoperator 2?. The outer knob is now, of course, held against rotation andentry through the door on which the lock is applied is impossible. Ofcourse, anyone can operate the inside knob and the inside spindle 35 toretract the latchbolt so that egress is possible. With the parts thuspositioned in Fig. 2, should a key be inserted in the key plug and theplug rotated, its bar 35 will rotate cam bringing the cam surface 8?against the cam surface 190. It will now be possible to move thecylindrical member 18a to the left, bringing the slot 8 I 11 away fromthe rib 32, Whereupon the parts will be positioned as shown in Fig. 1.At this point, the outer spindle 36 has been released for rotation andmay rotate with the knob 59 and spindle operator 2! to retract thelatchbolt through rollback l3.

During this movement of the spindle 35 to the left, the spindle 35 wasalso moved to the left, compressing the spring 48 and bringing shoulderMa, defining the left end of the slot 43 of spindle 35, away from thelug 4| of the slide 42. This movement of the inner spindle 35 does notin any way affect the positioning of the slide #32 and the push button[8 and its associated mechanism, including push piece 63 that holdsslide 42 in the position of Fig. 2. Therefore, once the latchbolt isretracted and the knob I9 is thereafter allowed to move with thecylinder and key plug 22 back to the position of Fig. 2, the spindle 33must also move to the right to its position of Fig. 2. In other words,the parts will once again be locked, and should re-entry be desired, thekey plug 22 must once again be rotated.

The operation of my invention will now be quite apparent. Thus, it willbe seen that with the parts in the initial position of Fig. 1, a fulldepression of push button iii will effect a locking of the outer spindle36 and the outer knob i9 through a movement of the spindle 33 to theright, This movement is effected through the intermediary of therelatively strong spring 58 operating against the relatively weak spring83 that holds the outer spindle 35 firmly against the inner spindle 35.With the parts locked as in Fig. 2, they may be released by a slightinward movement of the push button 18 sumoient to bring surface 58a ofthe detent 58 against the dog 61. If the parts remain locked as in Fig.

operation from the outside is possible through actuation of the keyplug- 22. Thus, rotation of the key plug 22 will through the cam surface8.! operate a cam surface 79a, and effect 'a movement of the spindle 36to the left from its position of Fig. l sufficient to unlock the spindleand bring it into the square bore of the rollback l3. Such movement doesnot disturb the push button It and its associated mechanism, but effectsonly the compression of the spring 48 so that a return of the cylinder2-13 and key plug 22 with the knob I9 back to the position of Fig. 2will effect the return of the parts into the locking position throughthe operation of the spring 48. Therefore, once the locking mechanism islocked from the inside, it can be released permanently by a slightdepression of the push button [8. It can be released temporarily at anytime from the outside by rotation of the key plug 22.

Under some circumstances, the key plug 22 may be arranged to operatethrough a particular distance so that it will lock the outer spindle 36in release position even though the push piece 63 is locked by dog illin its position of Fig. 2. Under such circumstances, the latchbolt maybe retracted by both the inside and outside knobs regardless of thepositioning of the push button and its control mechanism.

Referring now to Figs. 8, 9, and 10, I show a modification of theconstruction of the inside knob. Thus, the inside knob Ila of Fig. 8 issubstantially a duplicate of the knob ill of Fig. 1, except that itcarries, instead of the push button and its associated mechanism, acylinder lock 9! equipped with a key plug 92 that rotates an end bar 93adapted to rotate a cam 94, best shown in Fig. 9. Cam 94 is mountedwithin the inside spindle operator 29 and is held in position by thescalp 45, this being the same scalp that is utilized in the firstmodification described to hold slide 42 in position.

Cam 94 is formed with a cam surface 95 adapted for coaction with thecurved surface 45 at the left end of slide 42, this being the samecurved surface that in my first modification fits against the end of thescalp 46. .In the modification of Fig. 8, rotation of the key plug 92will cause the cam surface 95 of cam 94' to coact with the curvedsurface 45 of slide 42 to move the said slide 42 in exactly the samemanner as the said slide is actuated by push piece 63 and its pin 66 inmy first modification. In other words, rotation of the key plug 92 willeifect the locking of the outer spindle in the same manner as thislocking is accomplished by push button 18 in the first modification. Theparticular construction described is intended for use in installationswhere unauthorized locking of the outside knob or unauthorized releasingof the outside knob must be prevented. Thus, no one can lock or unlockthe outside knob of the modification of Fig. 8 except by a key out tofit the key plug 92. In all other respects, the operation of the partsof Figs. 8, 9, and is exactly the same as that of my earliermodification and need not further be described here.

The operation and functioning of my invention should now be clear tothose skilled in the art.

I now claim:

1. In a lock of the class described,- a rollback, a pair of spindles,means mounting said spindles for sliding movement transverselyrelativelyto said rollback, both said spindles being normally positionedwith a part thereof in operating relation to said rollback, an operator,means mounting said operator for movement relatively to said rollback,spring means extending between said operator and said spindles wherebymovement of said operator efiects movement of said spindles transverselyof said rollback through the intermediary of said spring means, andmeans for moving said spindles relatively to said operator against thepressure of said spring means.

2. Ina lock of the class described, a rollback having a bore, a pair ofspindles slidable in said bore transversely relatively to said rollbackand each adapted to rotate said rollback, both said spindles beingnormally positioned in said bore with a part thereof in operatingrelation to said rollback, an operator, means mounting said operator formovement relatively to said rollback, and spring means extending betweensaid operator and said spindles whereby movement of said operatoreffects movement of said spindles through the intermediary of saidspring means to move one of said spindles out of said rollback bore.

3; In a lock of the class described, a rollback having a bore, a pair ofspindles slidable in said bore transversely relatively to said rollbackand each adapted to rotate said rollback, both said spindles beingnormally positioned in said bore with a part thereof in operatingrelation to said rollback, an operator, means mounting said operator formovement relatively to said rollback, spring means extending betweensaid operator and said spindles whereby movement of said operatoreffects movement of said spindles through the intermediary of saidspring means to move one of said spindles out of said rollback bore, anoutside knob for rotating said one of said spindles to rotate saidrollback, and means carried by said knob for moving said spindle backinto said rollback bore against the pressure of said spring means. 7

4. Ina lock. of the class described, a housing, a rollback in saidhousing having a bore, an inside and an outside spindle rotatablymounted on said housing with both spindles having portions in saidrollback bore in operating relation to said rollback and slidablerelatively thereto, an operator, means mounting said operator on saidhousing for movement relatively thereto, and spring means extendingbetween said operator and said spindles whereby movement of saidoperator effects movement of said spindles through the intermediary ofsaid spring means to move said outside spindle out of the rollback bore.

5. In a lock of the class described, a housing, a rollback in saidhousing, an inside and an outside spindle rotatably mounted on saidhousing with both spindles in operating relation to said rollback andslidable relatively thereto, an operator, means mounting said operatoron said housing for movement; relatively thereto, and spring meansextending between said operator and said spindles whereby movement ofsaid operator efiects movement of said spindles through the intermediaryof said spring means.

6. In a lock of the class described, a rollback having a bore, a pair ofspindles slidable in said bore transversely relatively to said rollbackand eachadapted to rotate said rollback, both said spindles beingnormally positioned in said bore with a part thereof in operatingrelation to said rollback, an operator, means mounting said operator formovement relatively to said rollback, spring means extending betweensaid operator and spindles whereby movement of said operator eiTectsmovement of said spindles through the intermediary of said spring meansto move one of said spindles out of said rollback bore, and means formoving said spindle back into said rollback bore against the pressure ofsaid spring means.

7. In a lock of the class described, a housing, a rollback in saidhousing having a bore, an inside and an outside spindle rotatablymounted on said housing with both spindles having portions in saidrollback bore in operating rotation to said rollback and slidablerelatively thereto, an operator, means mounting said operator on saidhousing for movement relatively thereto, spring means extending betweensaid operator and said spindle whereby movement of said operator'efiects movement of said spindles through the intermediary of saidspring means to move said outside spindle out of the rollback bore, andkey operated means carried by said housing for moving said spindle backinto said rollback bore against the pressure of said spring means. 8. Ina lock of the class described, a housing, a rollback in said housinghaving a bore, an inside and an outside spindle rotatably mounted onsaid housing with both spindles having portions in said rollback bore inoperating relation to said rollback and slidable relatively thereto, anoperator, means mounting said operator on said housing for movementrelatively thereto, and spring means extending between said operator andsaid spindle whereby movement of said operator effects movement of saidspindles through the intermediary of said spring means to move saidoutside spindle out of the rollback bore, inside and outside knobs forrotating said inside and outside spindles, means carried by said insideknob for effecting movement of said operator to move said outsidespindle out of said rollback bore, and means carried by said outsideknob for moving said spindle back into said rollback bore against thepressure of said spring means. 9. In a lock of the class described, ahousing, a rollback in said housing having a bore, an inside and anoutside spindle rotatably mounted on said housing with both spindleshaving portions in said rollback bore in operating relation to saidrollback and slidable relatively thereto, an operator, means mountingsaid operator on said housing for movement relatively thereto, andspring means extending between said operator and said spindle wherebymovement of said operator effects movement of said spindles through theintermediary of said spring means to move said outside spindle out ofthe rollback bore, an outside knob for rotating said outside spindle toactuate said rollback when said spindle is within said rollback bore,and key operated means carried by said knob for moving said spindle backinto said rollback bore against the pressure of said spring means.

10. In a lock of the class described, a rollback, a pair of spindlesslidable transversely relatively to said rollback and each adapted torotate said rollback, both said spindles being normally positioned witha part thereof in operating relation to said rollback, a push piece forpushing said spindles relatively to said rollback whereby to move theouter of said spindles into locked position, a knob for rotating theinner of said spindles, a dog for locking said push piece in depressedposition to maintain said outer spindle looked, a push button in saidknob for pushing said push piece into its depressed position upon afirst push on said push button, and means where-- by said push buttonmoves said dog to release said push piece for outward movement out ofdepressed position when said push button is pushed inwardly a secondtime.

11. In a lock of the class described, a rollback having a bore, a pairof spindles slidable in said bore transversely relatively to saidrollback and each adapted to rotate said rollback, both said spindlesbeing normally positioned in said bore with a part thereof in operatingrelation to said rollback, a push piece, means mounting said push piecefor movement relatively to said rollback with a part of said push pieceadapted to move said spindles to position one of said spindles out ofsaid rollback bore, a knob, a dog for locking said push piece indepressed position to maintain said one spindle looked, a push button insaid knob for pushing said push piece into its depressed position upon afirst push on said push button, and means whereby said push button movessaid dog to release said push piece for outward movement out ofdepressed position when said push button is pushed inwardly a secondtime.

12. In a lock of the class described, a rollback, a pair of spindlesslidable transversely relatively to said rollback and each adapted torotate said rollback, both said spindles being normally positioned witha part thereof in operating relation to said rollback, a push piece forpushing said spindles relatively to said rollback whereby to move theouter of said spindles into locked position, a dog for locking said pushpiece in de pressed position to maintain said outer spindle looked, apush button for pushing said push piece into its depressed position upona first push on said push button, and means whereby said push buttonmoves said dog to release said push piece for outward movement out ofdepressed position when said push button is pushed inwardly a secondtime.

13. In a lock of the class described, a rollback having a bore, a pairof spindles slidable in said bore transversely relatively to saidrollback and each adapted to rotate said rollback, both said spindlesbeing normally positioned in said bore with a part thereof in operatingrelation to said rollback, a push piece, means mounting said push piecefor movement relatively to said rollback with a part of said push pieceadapted to move said spindles to position one of said spindles out ofsaid rollback bore, a dog for locking said push piece in depressedposition to maintain said one spindle locked, a push button for pushingsaid push piece into its depressed position upon a first push on saidpush button, and means whereby said push button moves said dog torelease said push piece for outward movement out of depressed positionwhen said push button is pushed inwardly a second time.

14. In a lock of the class described, a rollback having a bore, a pairof spindles slidable in said bore transversely relatively to saidrollback and each adapted to rotate said rollback, both said spindlesbeing normally positioned in said bore with a part thereof in operatingrelation to said rollback, an operator, means mounting said operator forinward movement relatively to said rollback, spring means extendingbetween said operator and said spindles whereby said inward movement ofsaid operator effects movement of said spindles through the intermediaryof said spring means to move one of said spindles out of said rollbackbore, means locking said operator in its inward position once it isdepressed into said posi- :aevaon tion, an outside knob tor rotatingsaid oneof said spindles to rotate said rollback, and means carried bysaid knob for moving said spindle back into said rollback bore againstthe pressure of said spring means while said operator remains locked inits inward position.

15. In a lock of the class described, a rollback having a bore, a pairof spindles slidable in said bore transversely relatively to saidrollback and each adapted to rotate said rollback, both said spindlesbeing normally positioned in said bore with a part thereof in operatingrelation to said rollback, an operator, means mounting said operator forinward sliding movement relatively to said rollback, means extendingbetween said op erator and said spindles whereby movement of saidoperator effects movement of said spindles through the intermediary ofsaid means to move one of said spindles out of said rollback bore, meanslocking said operator in its inward position once it is depressed intosaid position, an outside knob for rotating said one of said spindies torotate said rollback, and means carried by said knob for moving saidspindle back into said rollback bore while said operator remains lockedin its inward position.

16. In a lock of the class described, a housing, a rollback in saidhousing, an inside and an outside spindle rotatably mounted on saidhousing with both spindles in operating relation to said rollback andslidable relatively thereto, an operator, means mounting said operatoron said housing for inward and outward movement relatively thereto,spring means extending between said operator and said spindleswliereby'inward movement of said operator effects movement of saidspindles through the intermediary of said spring means, means forlocking said operator in its inward position, an inside knob having apush button, means whereby a first push on said push button moves saidoperator inwardly whereupon it is locked, and means whereby a secondpush on said push button releases said operator from said locking meansfor outward movement.

17. In a lock of the class described, a housing, a rollback in saidhousing, an inside and an outside spindle rotatably' mounted on saidhousing with both spindles in operating relation to said rollback andslidable relatively thereto, an operator, means mounting said operatoron said housing for inward and outward movement relatively thereto,means extending between said operator and said spindles whereby inwardmovement of said operator eiiects movement of said spindles through theintermediary of said means to move said outside spindle out of operativerelation to said rollback, an outside knob for rotating said outsidespindle to actuate said rollback, and key operated means carried by saidknob for moving said spindle back into operative relation to saidrollback while said operator remains in its inward position, said meansextending between said operator and said spindles being constructed topermit said spindle movement.

18. In a lock of the class described, a housing, a rollback in saidhousing, an inside and an outside spindle rotatably mounted on saidhousing with both spindles in operating relation to said rollback andslidable relatively thereto, ancperator, means mounting said operator onsaid housing for movement relatively thereto, spring means extendingbetween said operator and said spindles whereby movement of saidoperator effects movement of said spindles through the intermediary ofsaid spring means to move said outside spindle out of operating relationto said rollback, inside and outside knobs for rotating said inside andoutsidespindles, a key plug carried by said inside knob and rotatablefor efiecting movement of said actuator to move said outside spindle outor operating relation to said rollback, and means carried by saidoutside knob for moving said spindle back into operative relation tosaid rollback against the pressure of said spring means.

19. In a lock of the class described, a push piece, a spring pressingsaid push piece to an unlocking position, locking means movable by saidpush piece when depressed against the force of said spring, a dog forlocking said push piece in a depressed looking position, a push buttonfor pushing said push piece into its depressed posi tion upon a firstpush on said push button whereupon it is locked by said dog, and meanswhereby said push button moves said dog to release said push piece foroutward movement out of depressed position when said push button ispushed inwardly a second time.

20. In a lock of the class described, a push piece, a spring pressingsaid push piece to an unlocking position, locking means movable by saidpush piece when depressed against the force of said spring, a'dog forlocking said push piece in a depressed locking position, a push buttonfor pushing said push piece into its depressed position upon a firstpush on said push button whereupon said dog locks said push piece insaid depressed locking position, a spring for pressing said push buttonoutwardly away from said push piece to its original position, and adetent member movable with said push button for moving said dog out oflocking position upon a second push on said push button whereby torelease said push piece for movement by its spring to its unlockingposition.

21. In a lock of the class described, a push piece, a spring pressingsaid push piece to an unlocking position, a dog for locking said pushpiece in a depressed locking position, a push button for pushing saidpush piece into its depressed position upon a first push on said pushbutton, a detent carried by said push button and yieldingly held in apredetermined position relatively thereto, said detent moving said dogto a release position when said push button is pushed inwardly apredetermined distance, said detent thereafter releasing said dog tolock said push piece upon further inward pushing of said push button andpush piece, a spring for pressing said pushbutton outwardly away vfromsaid push piece to its original position, said detent during saidoutward movement functionally by-passing said dog to leave it in itsposition locking said push piece, and the inward movement of said pushbutton and detent thereafter a limited distance effecting the releasemovement of said dog to release said push piece for movement by itsspring toward its unlocking position.

22. In a lock of the class described, a push piece, a dog for lockingsaid push piece in depressed position, a push button for pushing saidpush piece into its depressed position upon a first push on said pushbutton, and means whereby said push button moves said dog to releasesaid push piece for outward movement out of depressed position when saidpush button is pushed inwardly a second time.

23. In a lock of the class described, a push piece, a dog for lockingsaid push piece in depressed position, a push button, a spring pressingsaid push button outwardly relatively to said push piece, the depressionof said push button moving said push piece into a depressed positionwhereupon it is locked by said dog in said depressed position, a detentmovable with said push button, means mounting said detent for positivemovement with said push button inwardly in the direction of said pushpiece, and for yielding movement in a reverse direction, said detenthaving a cam surface for moving said dog out of locking position as itmoves past said dog during the inward stroke of said push button anddetent, said detent yieldingly moving relatively to said dog during thereturn stroke of said push button to leave said dog in locking position.

24. In a lock of the class described, a knob, a push piece carried bysaid knob, a dog for looking said push piece in depressed positionrelatively to said knob, a push button mounted on said knob, a springpressing said push button outwardly of said knob and relatively to saidpush piece, the depression of said push button moving said push pieceinto a depressed position whereupon it is locked by said dog in saiddepressed position, a detent movable with said push button, meansmounting said detent for positive movement with said push buttoninwardly of said knob, and for yielding movement in a reverse direction,said detent having a cam surface for moving said dog out of lockingposition as it moves past said dog during the inward stroke of said pushbutton and detent, said detent yieldingly moving relatively to said dogduring the return stroke of said push button to leave said dog inlocking position.

25. In a lock of the class described, a locking member, a knob, a pushpiece carried by said knob, a dog for locking said push piece indepressed position relatively to said knob, a push button for pushingsaid push piece into its depressed position upon a first push on saidpush button, and means whereby said push button moves said dog toreelase said push piece for outward movement out of depressed positionwhen said push button is pushed inwardly a second time.

26. In a lock of the class described, a locking member, a knob, a pushpiece carried by said knob, a dog for locking said push piece indepressed position relatively to said knob, a push button mounted onsaid knob, a spring pressing said'push button outwardly of said knob andrelatively to said push piece, limit means for limiting the movement ofsaid push button outwardly of said knob, the depression of said pushbutton moving said push piece into depressed position whereupon it islocked by said dog in depressed position, a release part movable withsaid push button outwardly of said knob thereafter and relatively tosaid push piece and dog, said release part moving into position, oncepast and outside relatively to said dog, whereby upon depression of saidpush button thereafter it moves said dog to release said push piece formovement outwardly of said knob.

27. In a lock of the class described, a locking member, a knob, a pushpiece carried by said knob, a dog for locking said push piece indepressed position relatively to said knob, a push button mounted onsaid knob, a spring pressing said push button outwardly of said knob andrelatively to said push piece, limit means for limiting the movement ofsaid push button outwardly of said knob, the depression of said pushbutton moving said push piece into depressed position whereupon it islocked by said dog in depressed position, a release part carried by saidpush button and lying in a position to extend inwardly of said dog whensaid push button is depressed, said release part being movable with saidpush button outwardly relatively to said knob thereafter and relativelyto said push piece and dog, said release part moving into position, oncepast and outside relatively to said dog, whereby upon depression of saidpush button thereafter it moves said dog to release said push piece formovement outwardly of said knob.

FREDERIC K. HEYER.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 351,107 Hicks Oct. 19, 1886 474,519 Candee May 10, 18921,903,190 Neldner Mar. 28, 1933 1,968,285 Egan July 31, 1934 2,210,080Hover et al Aug. 6, 1940 2,238,066 Mantz Apr. 15, 1941 2,389,819 SchlageNov. 27, 1945 2,417,195 Hargreaves Mar. 11, 1947

